Anthraquinone type compound and liquid crystal composition conta

Details Anthraquinone type compound and liquid crystal composition conta Anthraquinone type compound and liquid crystal composition conta

1990-01-02

1991-01-15

Maples, John S.

Optics: motion pictures

Picture carriers

Strip type

350349, 552234, 552289, 544261, 544285, 544294, 544299, 546276, 546285, C09K 1900, G02F 113, C07D40100, C07D47500

Patent

active

049851713

ABSTRACT:
An anthraquinone type compound which is represented by the following general formula (I) and which exhibits yellow to orange-colored hue; and a composition for liquid crystal display element obtained by dissolving the compound into liquid crystal: ##STR1## (where: X.sup.1 and X.sup.2 denote sulfur or selenium; and R.sup.1 and R.sup.2 represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted pyridyl group, a substituted or unsubstituted pyrmidyl group or a tetrahydronaphthyl group, with the following exceptions:

REFERENCES:
patent: 4446047 (1984-05-01), Thompson
patent: 4455253 (1984-06-01), Thompson
European Search Report Dated 8/2/90.

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